ELASTIC_CLUSTER
Returns information about cluster elasticity, such as whether Elastic Cluster is running.
Returns information about cluster elasticity, such as whether Elastic cluster is running.
| Column Name | Data Type | Description |
|---|---|---|
SCALING_FACTOR |
INTEGER |
This value is only meaningful when you enable local segments. SCALING_FACTOR influences the number of local segments on each node. Initially—before a rebalance runs—there are scaling_factor number of local segments per node. A large SCALING_FACTOR is good for rebalancing a potentially wide range of cluster configurations quickly. However, too large a value might lead to ROS pushback, particularly in a database with a table with a large number of partitions. See SET_SCALING_FACTOR for more details. |
MAXIMUM_SKEW_PERCENT |
INTEGER |
This value is only meaningful when you enable local segments. MAXIMUM_SKEW_PERCENT is the maximum amount of skew a rebalance operation tolerates, which preferentially redistributes local segments; however, if after doing so the segment ranges of any two nodes differs by more than this amount, rebalance will separate and distribute storage to even the distribution. |
SEGMENT_LAYOUT |
VARCHAR | Current, offset=0, segment layout. New segmented projections will be created with this layout, with segments rotated by the corresponding offset. Existing segmented projections will be rebalanced into an offset of this layout. |
LOCAL_SEGMENT_LAYOUT |
VARCHAR | Similar to SEGMENT_LAYOUT but includes details that indicate the number of local segments, their relative size and node assignment. |
VERSION |
INTEGER | Number that gets incremented each time the cluster topology changes (nodes added, marked ephemeral, marked permanent, etc). Useful for monitoring active and past rebalance operations. |
IS_ENABLED |
BOOLEAN | True if Elastic Cluster is enabled, otherwise false. |
IS_LOCAL_SEGMENT_ENABLED |
BOOLEAN | True if local segments are enabled, otherwise false. |
IS_REBALANCE_RUNNING |
BOOLEAN | True if rebalance is currently running, otherwise false. |
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